Paper-cutting machine.



T. (LDEXTER. PAPER GETTING MACHINE. APPLIUMION FILED JULY 1s, 190B l Patented June 1,1909.4

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3 Mmel nto@ a Kwi- .T. C. DEXTER. PAPER CUTTING MACHINE.' I APPLICATION FILED JULY 18.1908'.

Patented June 1, 1909.

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1N: Nonni: 'Enns co., wAsHmmcN, n. c.

T. C DEXTER.

PAPER CUTTING MACHINE.

APPLICATION FILED JULY 1B, 1908. 923, 154, Patented June 1, 1909.

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TALBOT C. DEXTER, OF PEARL RIVER, NEW YORK.

` i no.. 9723,71 54..

PAPER-CUTTING MACHINE.

Tol aZZhiwto/m it may concern.'` f Be it known that l, TALBOT O. DEXTER, a

i :citizen ofthe UnitedStates, residing at Pearl Rivenxin the countyof Rockland ahd State of New York, have invented certain new and useful Improvements inPapenOutti'ng Machilies, of which the following is a specification.y n s My invention relates to improvements in ythe clamp .controlling mechanism of paper cuttingmachines of the type set forth in Patents Nos., 371,572 and 871,573, granted ito me November 19th,y 1907, the object of my, jresent invention being to provide a siinp .efand effective manually operated de- ,y vice for controlling the hook which connects p 'y the two parts of the clamp, whereby the may 1 y :chine may be operated continually as a ypower clamp, or as a manual power clamp, or

particularly in the annexed claims.

the lower part of the clamp left in engagement with the pile after its power operation. ln'order that my invention may be fully understood, I will first describe the same with reference to the accompanying drawings and afterward point out the novelty more In said drawings Figure 1 is a front elevay tionof a paper cutting machine having my improvement applied thereto. rside elevation of the same. larged detail vertical sectional viewV showing Y Fig-.2 is a Fig. 3 is an enthe improved clamp controlling mechanism,

and Fig. 4 is a detail rear elevation of the VFor lthe pur ose of illustrating my invention 1T vhave siown it applied to the paper fcuttingfinachine set forth in Patent No.

807,730, granted to me December 19th, 1905.

It will be understood, however, that l do not intendto limit my invention to its applical tion to this particular form of paper cutting machine, since it can with equal advantages ,be applied to many other forms of paper cutting machines in which the clamp is made 1n two parts or members arranged for either power operation or manual operation at the will yof Athe operator.

l y y rThe side frames or standards 1 are firmly braced and connectedvby the top rail or cross-head 2, the center rail 3, the bottom rock shaft y4l, the cutter operating shaft 16, clamp operating shaft 113 and the main power shaft 22 `of the machine.

Specication of Letters Patent.

Application led July 18, 1908.

Patented June 1, 1909.

Serial No. 44,188.

tically and transversely of the machine in the vertical guide slots formed in the side frames or standards 1, said cross-head 7 being suitably anchored to the top rail 2 by means not shown, and connected through links 18 with the cranks 17 mounted upon the knife operating shaft 16.

The paper holding clamp is formed of two parts or members 105 and 106 which are in effect two transversely arranged bars resting one above the other and operating in suitable vertical slots or guide-ways formed on the inner faces of the side frames or standards 1. The upper part of member 105 of the clamp has secured to its opposite ends the depend ing rack bars 109 which are in constant mesh with gears 112 mounted upon the opposite ends of the clamp operating shaft 113 which is freely ournaled in the side frames of the machine. These rack bars 109 rest in vertical slots or guides formed in the opposite ends of the lower part or member 106 of the clamp, so that said lower member can move freely vertically upon the upper portions of rack bars 109.

Attached to the opposite ends of the lower clamping member 106 are the ends of ropes or chains 108 which pass up over the grooved 'pulleys 110 and are connected at their lower ends beneath the paper support platform with a counterbalance weight W which hal ances the weight of the clamping members and the attached arts.

132 is a centra ly arranged foot lever secured to the rock shaft 4 and having formed integral with it a rearwardly projecting rock arm 133 which rests centrally beneath the counterweight 1V for raising the weight and lowering the member 106 of the clamp independently of the power mechanism.

120 is a heavy hook freely pivoted upon a pin 121 mounted in bracket 122 secured to the rear face of the upper clamp member 1.05. This hook 120 extends vertically and is adapted to engage at its lower hook end with the rearwardly presented flange or upper wall 106a of the lower clamp member 106 to securely couple the two clamp members 105 and 106 to cause them to operate as one.

The upper end of the heavy hook 120 is rovided with a rearwardly presented pin or ug 125 which is adapted to engage and move upon the forward face of a plate or bar 130, which is pivoted at 131 in the rearwardly presented bifurcated end of bracket arm 132, secured at 133 to the under face of the top rail or cross-head 2. The upper end of the plate or bar 130 above the pivot 131, is bifurcated as shown at 135 to receive the rear end of a controlling rod 136, to which it is pivoted by pin 137. This controlling rod 136 passes forwardly through the front wall of the top rail 2 in which it is journaled at 138. A block or collar 139 is mounted upon the rod 136 to coniine upon said rod between the block and the front wall of the top rail 2 an expansion spring 139a which tends to move the rod 136 rearwardly in its bearing for placing the controlling late or bar 130 in the position shown in fu l lines in Fig. 3.

The bearing 138 is extended Vforwardly from the top rail 2 and has cut into its ferward end a spiral cam `face 140, with which engages the similar cam face 141 formed on a hub 142 of a hand lever 143. This hand lever 143 is freely journaled upon the rod 136 with its cam face in engagement with the cam face of the bearing, a nut or other suitable device 145 upon the forward end of the rod 136 serving to hold the lever 143 in place.

150 is a stop pin projecting from the face of the top rail or cross-head 2 into the path of the hand lever 143, so as to limit the movement of said lever in one direction as indicated particularly in Fig. 1.

The knife operating shaft 16 and clamp Y`operating shaft 113 may be driven in any suitable manner from the main power shaft oi the machine, such for instance by the mechanism described and illustrated in my above named Patent No. 807,730.

The operation of the device will be understood from the following brief explanation:

rlhe parts` shown in the drawings in full lines are in their normal position in which position the plate or bar 130 is in engagement with I the heel or lug 125 of the hook 120 to hold said hook disengaged from the flange or plate 106a of the lower clamp 106. l/Vhen the parts are in this position said hook will be held in disengaged position, whether the clamp is raised or lowered. When the parts are in this position, the lower member of the clamp may be manually operated independently of the upper member of the clamp. Furthermore, if both members of the clamp Nhave been moved downwardly by power,

and it is desired to retain the lower member in engagement with the pile, the hook 120 may be disengaged from the lower member by the operation of the plate or bar 130 to permit the power driven upper member of the clamp to return to its raised position alone. The position shown in dotted lines in Fig. 3 of the drawings, in which the hook 120 is in engagement with the lower member -of the clamp, is the position of the parts when the .clamp is operated by power. ln this position it will be observed that the heel or lug 125 upon the hook is out of engagement with the plate or bar 130. To move the controlling plate or bar 130 from the position shown in full lines to the position shown in dotted lines, the operator rotates the hand lever 143 up into engagement with the stop 150, which action tnrough the cam faces 140 and 141 moves rod 136 forwardly through its bearing compressing spring 1393, and moves the plate or bar 130 upon its pivot as shown.

The operation of the clamp, either by power or manually, is fully explained in my above named Patent No. 807,730, but it will be understood that any suitable form of mechanism may be employed for either the power or manual operation ol' the clamp without departing from the spirit ol' my invention, which relates solely to manually controlled means for detachably coupling the two parts of the clamp for conveniently changing from a manual to a power operation and vice versa.

*What l claim is:

1. The combination, in a paper cutting machine, of a paper holding clamp comprising two vertically movable parts or members, independent operating means for each of said parts or members, a coupling hook pivotally mounted upon one of said members and movable upon its pivot longitudinally o'll the machine and adapted to engage a part upon the other of said members, and a manually operated bracket arm movable longitudinally of the machine into and out ol' engagement with said hook for moving said hook into uncoupled or coupled position.

2. The combination, in a paper cutting machine, of the upper and lower clamp bars or members, means for operating said clamping bars or members, a coupling hook pivotally mounted upon one oi said members and adapted to engage the other of said members, a bracket mounted upon the machine frame, a plate or bar pivotally mounted upon said bracket and projecting downwardly therefrom adjacent to said hook, and manually operated means for adjusting the position of said plate or bar, substantially as and for the purpose set forth.

3. The combination, in a paper cutting machine, of the upper and lower clamping bars or members, means for operating said clamping bars or members, a coupling hook pivoted upon one of said members and adapted to engage the other ol' said members, a bracket arm projecting from the machine frame above said coupling hook, a controlling plate or bar pivotally mounted upon said bracket and projecting downwardly in rear of said hook, a rod pivoted to said controlling plate or bar passing forwardly through the frame, and manually operated means for shifting said rod.

4. The combination, in a paper cutting y "bars Orfmemberameans for operating said clamping bars or members, a coupling hook pivoted upon one oi said members and adaptedto engagethe other of said members, a

bracket arm: projecting from the machine frame above said coupling hook, a controlling plate kor'fbar pivotally mounted upon said bracketand 'projecting downwardly in rear oi said hook, a rod pivoted to said controlling plate or bar passing forwardly through the frame, a spring i'or moving said rod longi- 'K tudinally in one direction, and manually op- 5. The combination, in a paper cutting ,machina ol' the upper and lower clamping barsor members, means l'or operating said clamping bars orl members, a coupling hook ypivoted upon one of said members and adapted to engage the otheroil said members, a bracketgarm projecting from the machine irame'above said coupling hook, a controlling rplate or bar pivotally mounted upon said bracket kand projecting downwardly in rear of said hook, a rod pivoted to said controlling plate or bar passing forwardly through the frame, a rotatable hand lever upon said rod, and cam faces upon said hand lever and the bearing for said rod.

6. The combination, in a paper cutting machine, of the upper and lower clamping bars or members, means for operating said clamping bars or members, a coupling hook pivoted upon one ot' said members and adapted to engage the other of said members, a bracket arm projecting 'from the machine frame above said coupling hook, a controlling plate or bar pivotally mounted upon said bracket and projecting downwardly in rear of said hook, a rod pivoted to said controlling plate or bar passing 'forwardly through the frame, a hand lever operativel connected with said rod, and a stop 'for limiting the movement ol' said hand lever.

TALBOT C. DEXTER.

Witnesses:

A. C. HAMMOND, LENA J. TYGERT. 

